Combination coiling and uncoiling apparatus



' 1967 YASUKI KOREISHI 3,300,159

COMBINATION COILING AND UNCOILING APPARATUS Filed March 5, 1965 InVEnTvayasuKi Mar-diam ATTORNEY A United States Patent COMBINATION COILING ANDUNCOILING APPARATUS Yasuki, Koreishi, Hitachi-shi, Japan, assignor toHitachi,

Ltd., Tokyo, Japan Filed Mar. 5, 1965, Ser. No. 437,518

Claims priority, application Japan, Mar. 6, 1964,

39/12,306 2 Claims. (Cl. 24278.1)

The present invention relates to an improvement in the structure of acombination coiling and uncoiling apparatus which is operative to takeup in a coil-like shape a hoop continuously fed out of a rolling mill orthe like and to pay off the hoop wound in the coil-like shape therefrom.

Conventional combination coiling and uncoiling apparatus of this typehitherto employed in the art consisted of t wo sections, that is, amechanical section including coiling and uncoiling mechanisms thereinand a section ncluding therein an electric motor for driving themechanical section, and these two sections are completely separated fromeach other. According to prior practice connection between these twosections has been effected 111 a manner that one end of a drum shaft inthe mechanical section is connected by means of a coupling with one endof the drive shaft in the electric motor or a hollow shaft accommodatingtherein the drum shaft of the mechamcal section is indirectly connectedwith the drive shaft in the electric motor through a reduction gearinginterposed therebetween. Thus, the conventional combination COlllIlg anduncoiling apparatus has required a complex structure and a wide spacefor installation and has been dlsadvantageous in respect of economy.

Therefore, it is the primary object of the present invention to providean improved combination coilin and uncoilmg apparatus which is simple instructure? requires gully: ci'lsltdll space for installation and can beobtained There are other objects and particularities of the presentinvention which will become obvious from the followng description Withreference to the accompanying drawing, in which the sole figure is afragmentarily longitudirlijal sectional front view of an embodiment ofthe co theIHinIIZeEIIlIEiCiEIHFOIhHg and uncoiling apparatus accordingto Referring to the figure, the coiling and uncoiling drum forming apart of the mechanical section is axially split into a plurality of drumsegments 1. A plurality of axial $61165 of wedge-shaped grooves 2 areprovided in the inner peripheral face of the drum so as to cause radialmovement of the drum segments 1 in cooperation with means as will bedescribed later to thereby vary the diameter of the outer periphery ofthe drum formed by the drum segments 1. An electric motor to drive thedrum is generally designated by reference numeral 3 and has a hollowrotor shaft 4 therein. A drum shaft 7 extends through the axial bore inthe rotor shaft 4 and one end thereof terminates in the drum. A wedgemember 5 1s axiallyslidably mounted on this end of the drum shaft 7 andis in engagement with the wedge-shaped grooves 2 n the drum. On theother end of the drum shaft 7, there 15. mounted a rotary cylinder 6which is connected with a distributing valve 16 for receiving a fluid atpressure there from. The drum shaft 7 is journalled in bearings 9 and 10on opposite sides of the motor 3. The bearings 9 and 10 are suitablysupported on a frame 8. An axial bore 11 extends through the entirelength of the drum shaft 7, and in the axial bore 11, there is axiallyslidably disposed a piston rod 13 which is connected at one end with thewedge member 5 and provided at the other end with a piston 12operatively enclosed in the rotary cylinder 6. A key 14 is provided totransmit the driving power from the rotor shaft 4 to the drum shaft 7. Ahoop coiled about the drum is shown by a phantom line as at 15. A pulley17 is disposed on the shaft 7 at a position between the electric motor 3and the rotary cylinder 6 and is connected with a brake unit.

The radial movement of the drum segments 1 can be caused by a hydraulicpressure. Or more precisely, a fluid at pressure is supplied from afluid source (not shown) to the distributing valve 16, thence into acompartment A or B in the rotary cylinder6 depending on the operationdesired. The piston 12 secured to the piston rod 13 and disposed in therotary cylinder 6 is urged in either direction by the pressure fluid tocause the axial movement of the piston rod 13. The movement of thepiston rod 13 causes corresponding'movement of the wedge member 5, whosesloped face acts on the wedge-shaped grooves 2 formed on the inner faceof the drum to cause the radial movement of the drum segments 1 so thatthe outer diameter of the drum can be varied. The rotation of the drumfor the coiling of the hoop 15 thereon and uncoiling of the hoop 15therefrom can be effected in interengaging relation with the radialmovement of the drum segments 1, said rotation of the drum beingeffected by the driving force transmitted from the rotor shaft 4 of themotor 3 through the key 14 to the drum shaft 7.

From the foregoing description, it will be understood that, according tothe present invention, an electric motor is interposed between a drumand a rotary cylinder and the drum is rotated from the rotor shaft ofthe electric motor. Thus, this arrangement provides compact structureand requires a small space for installation. Among other advantages,this invention is advantageous over conventional structure in that ahollow shaft generally used for the transmission of rotation to the drumis eliminated.

What is claimed is:

1. A combination coiling and uncoiling apparatus for use in connectionwith a rolling mill or the like, comprising an electric motor, a drumdrive shaft extending in both directions through said motor for rotationthereby, a drum mounted on one endof said drive shaft for taking upthereon a hoop in the form of coil and paying off the coiled hooptherefrom, said drum being axially split into a plurality of drumsegments arranged for movement in the radial direction of said drum, andsaid drum being directly coupled to said motor with a bearing interposedtherebetween, a rotary cylinder mounted on the other end of said driveshaft in a manner to be directly coupled to said motor with a bearinginterposed there/between, a piston movably disposed in said rotarycylinder and having its piston rod passed through an axial bore in saiddrive shaft to terminate at said one end of said drive shaft, and meansprovided in said drum and operatively connected with said piston rod soas to cause in response to axially advancing and retracting movement ofsaid piston rod corresponding radial movement of said drum segments tothereby cause contraction and expansion of the outside diameter of saiddrum.

a 4 2, A combination coiling and uncoiling apparatus ac- 7 ReferencesCited by the Examiner cording to claim 1, in which said means connectedwith said piston rod are a plurality of Wedge-shaped grooves UNITEDSTATES PATENTS provided in axial series on the inner peripheral faces f2,578,953 12/ 195 1 Tyrrell 242-781 said drum segments and a wedgemember axially slidably 5 2,5 83,040 1/ 1952 Cawley et a1 24275 .51mounted on said one end of said drive shaft, said Wedge 3 087 633 4/1963 A d t 1 242-721 member being so shaped as to engage with saidWedgeshaped grooves in said drum segments so that its move- FRANK COHENPrimary ment relative to said grooves causes radial movement of saiddrum segments. 10 N. L. MINTZ, Assistant Examiner.

1. A COMBINATION COILING AND UNCOILING APPARATUS FOR USE IN CONNECTIONWITH A ROLLING MILL OR THE LIKE, COMPRISING AN ELECTRIC MOTOR, A DRUMDRIVE SHAFT EXTENDING IN BOTH DIRECTIONS THROUGH SAID MOTOR FOR ROTATIONTHEREBY, A DRUM MOUNTED ON ONE END OF SAID DRIVE SHAFT FOR TAKING UPTHEREON A HOOP IN THE FORM OF COIL AND PAYING OFF THE COILED HOOPTHEREFROM, SAID DRUM BEING AXIALLY SPLIT INTO A PLURALITY OF DRUMSEGMENTS ARRANGED FOR MOVEMENT IN THE RADIAL DIRECTION OF SAID DRUM, ANDSAID DRUM BEING DIRECTLY COUPLED TO SAID MOTOR WITH A BEARING INTERPOSEDTHEREBETWEEN, A ROTARY CYLINDER MOUNTED ON THE OTHER END OF SAID DRIVESHAFT IN A MANNER TO BE DIRECTLY COUPLED TO SAID MOTOR WITH A BEARINGINTERPOSED THEREBETWEEN, A PISTON MOVABLY DISPOSED IN SAID ROTARYCYLINDER AND HAVING ITS PISTON ROD PASSED THROUGH AN AXIAL BORE IN SAIDDRIVE SHAFT TO TERMINATE AT SAID ONE END OF SAID DRIVE SHAFT, AND MEANSPROVIDED IN SAID DRUM AND OPERATIVELY CONNECTED WITH SAID PISTON ROD SOAS TO CAUSE IN RESPONSE TO AXIALLY ADVANCING AND RETRACTING MOVEMENT OFSAID PISTON ROD CORRESPONDING RADIAL MOVEMENT OF SAID DRUM SEGMENTS TOTHEREBY CAUSE CONTRACTION AND EXPANSION OF THE OUTSIDE DIAMETER OF SAIDDRUM.